873019813 has 4 divisors (see below), whose sum is σ = 883538208. Its totient is φ = 862501420.

The previous prime is 873019811. The next prime is 873019837. The reversal of 873019813 is 318910378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 873019813 - 2¹ = 873019811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873019811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5259073 + ... + 5259238.

It is an arithmetic number, because the mean of its divisors is an integer number (220884552).

Almost surely, 2^873019813 is an apocalyptic number.

873019813 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

873019813 is a deficient number, since it is larger than the sum of its proper divisors (10518395).

873019813 is a wasteful number, since it uses less digits than its factorization.

873019813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10518394.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 873019813 is about 29546.9086877122. The cubic root of 873019813 is about 955.7435299513.

The spelling of 873019813 in words is "eight hundred seventy-three million, nineteen thousand, eight hundred thirteen".